Chemical Engineering > GATE 2018 > Optimization
A person is drowning in sea at location R and the lifeguard is standing at location P. The
beach boundary is straight and horizontal, as shown in the figure.
The lifeguard runs at a speed of VL and swims at a speed of VS.
In order to reach the drowning person in optimum time, the lifeguard should choose point Q such that __________.

In order to reach the drowning person in optimum time, the lifeguard should choose point Q such that __________.
Correct : d
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